/* 清楚默认样式 */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    list-style: none;
    text-decoration: none;
}
body{
    background-color: aqua;
}
main{
    width: 1280px;
    margin: 0 auto;
    background-color: white;
}
nav{
    width: 100%;
}
nav li{
    width: 20%;
    float: left;
    background-color: darkorange;
    text-align: center;
}
nav li a{
    display: block;
    width: 100%;
    color: white;
    padding: 20px 0;
}
/* 悬浮 */
nav li a:hover{
    background-color: red;
    /* 小手指效果 */
    cursor: pointer;
}


.banner{
    width: 100%;
    height: 340px;
    background: url(ym2.jpg) no-repeat ;
    background-size: 100% 340px;
}
.banner>P{
    font-size: 56px;
    color: white;
}
/* 版心部分 */
.conterin{
    width: 80%;
    height: 400px;
    background-color: white;
    margin-top: 20px;
    margin: 0 auto;
}
.conterin>.top1{
    width: 100%;
    height: 320px;
    
}
.top1>.left{
    width: 250px;
    height: 100%;
    background-color: red;
    float: left;
    padding-left: 0 10px;
}

.top1>.center{
    width: 620px;
    height: 100%;
    background-color: rgb(255, 0, 64);
    float: left;
    margin: 0 10px;
}

.top1>.right{
    width: 250px;
    height: 100%;
    background-color: aqua;
    float: left;
}
.top1>.left>ul{
    list-style: none;
}
.top1>.left h2{
background-color: deepskyblue;
font-size: 20px;
padding: 15px 0;
border-bottom: 1px solid blue;
}
.top1>.left>ul>li{
    color: blue;
    line-height: 40px;
    padding-left: 15px;
    
}
.top1>.center{
    background: url(4.webp);
    background-size: 620px 100%;
}
.top1>.right>.news{
    width: 100%;
    height: 55px;
    line-height: 35px;
    border-bottom: 3px solid wheat;
    background-color: blueviolet;
}
.top1>.right>.news>.nright{
border-bottom: 3px solid red;
padding-bottom: 25px;
  font-weight: 900;
}
.top1>.right>.news>.nleft{
  font-size: 14px;
  float: right;
}
.top1>.right>ul{
    width: 100%;
    height: 270px;
    background-color:yellow;
    list-style: none;

    padding: 0 15px;
    box-sizing: border-box;

}
.top1>.right>ul>li{
    font-size: 15px;
    color: red;
    line-height: 40px;
}
